Laid in the front cover is a list of cipher holders for no.1 and no. 5 in Division of the Gulf on yellow carbon paper sheet dated 1866, May 7; also a receipt for No. 12 cipher on telegraph paper, signed T.R. Boyle, July 13, 1866. Four pages (numbered 27-30) bound in between p. 11 and 12, four blue unnumbered pages bound in between p. 25 and 26. A list of cipher holders on t.p. verso. Ms. page numbers.
Cryptography--Handbooks, manuals, etc Cryptography--United States United States--History--Civil War, 1861-1865--Communications--Sources United States--History--Civil War, 1861-1865--Cryptography United States. Military Telegraph Corps
Source
Thomas T. Eckert papers, 1861-1877 (bulk 1862-1867) Thomas T. Eckert Papers, Decoding the Civil War
Provenance
Purchased in part by the Library Collectors' Council from Seth Kaller, January 21, 2012.
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